Vulnerability Description
The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | All versions |
| Citrix | Xenserver | 6.0.2 |
Related Weaknesses (CWE)
References
- http://www.debian.org/security/2017/dsa-3981
- http://www.openwall.com/lists/oss-security/2017/08/15/4Mailing ListMitigationThird Party Advisory
- http://www.securityfocus.com/bid/100343Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039176Third Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-229.htmlMitigationPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1477656Issue TrackingMitigationPatch
- https://security.gentoo.org/glsa/201801-14
- https://support.citrix.com/article/CTX225941PatchThird Party Advisory
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
- http://www.debian.org/security/2017/dsa-3981
- http://www.openwall.com/lists/oss-security/2017/08/15/4Mailing ListMitigationThird Party Advisory
- http://www.securityfocus.com/bid/100343Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039176Third Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-229.htmlMitigationPatchVendor Advisory
FAQ
What is CVE-2017-12134?
CVE-2017-12134 is a vulnerability with a CVSS score of 8.8 (HIGH). The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, caus...
How severe is CVE-2017-12134?
CVE-2017-12134 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12134?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Citrix Xenserver.